<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>
  <script>
    // let if = 10
    let num1$_ = 11
    // let nav-bar = 11
    // let 1num = 10
    let pink = '老师'
    let Pink = '演员'
    console.log(pink, Pink)
  </script>
</body>

</html>